but the Levites shall camp around the tabernacle of the Testimony, that there may be no wrath on the congregation of the children of Israel; and the Levites shall keep charge of the tabernacle of the Testimony."
Numbers 1:53
Surrounding context
1:52 The children of Israel shall pitch their tents, everyone by his own camp, everyone by his own standard, according to their armies;
1:53 but the Levites shall camp around the tabernacle of the Testimony, that there may be no wrath on the congregation of the children of Israel; and the Levites shall keep charge of the tabernacle of the Testimony."
1:54 Thus the children of Israel did; according to all that the LORD commanded Moses, so they did.